Costco has a pretty small 6000 btu AC now
I bought one and am going to see if I can mod it to work just venting from the back for a in-cabinet side wall installation. It is very very tiny and $139. I will let you know how it goes.
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Sears has a 5,200 BTU model that has a low amp draw. I plan on adding it to my Northstar MC600 with thermal pack popup camper.
